The best cobra for Bob

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#12 (permalink)

07-17-2018, 08:27 AM

bubela

CC Member

Join Date: Jul 2018

Location: Norristown, PA

Cobra Make, Engine: Backdraft w/Smeding 351 dart block punched to "427"

Posts: 28

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That is wild! A 9:1 compression ratio with that much power? I can't believe it. I've built low compression engines for my BMWs in that range, but then I add 20 pounds of boost! My 3.0L makes 500whp 425wtq on 93 octane in a 2800 pound car. That car runs an 11.3 on 93. Can't imagine what 640tq feels like in a 2500 pound car.

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#663 Backdraft Smeding "427" 6spd
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